diff options
Diffstat (limited to 'tex/context/base/typo-dua.lua')
| -rw-r--r-- | tex/context/base/typo-dua.lua | 97 |
1 files changed, 60 insertions, 37 deletions
diff --git a/tex/context/base/typo-dua.lua b/tex/context/base/typo-dua.lua index ec85a3d9f..1e9b325a6 100644 --- a/tex/context/base/typo-dua.lua +++ b/tex/context/base/typo-dua.lua @@ -66,11 +66,25 @@ local formatters = string.formatters local directiondata = characters.directions local mirrordata = characters.mirrors -local remove_node = nodes.remove -local insert_node_after = nodes.insert_after -local insert_node_before = nodes.insert_before - -local nodepool = nodes.pool +local nuts = nodes.nuts +local tonut = nuts.tonut +local tonode = nuts.tonode +local nutstring = nuts.tostring + +local getnext = nuts.getnext +local getchar = nuts.getchar +local getid = nuts.getid +local getsubtype = nuts.getsubtype +local getlist = nuts.getlist +local getfield = nuts.getfield +local setfield = nuts.setfield + +local remove_node = nuts.remove +local copy_node = nuts.copy +local insert_node_after = nuts.insert_after +local insert_node_before = nuts.insert_before + +local nodepool = nuts.pool local new_textdir = nodepool.textdir local nodecodes = nodes.nodecodes @@ -93,7 +107,7 @@ local maximum_stack = 60 -- probably spec but not needed local directions = typesetters.directions local setcolor = directions.setcolor -local a_directions = attributes.private('directions') +----- a_directions = attributes.private('directions') local remove_controls = true directives.register("typesetters.directions.one.removecontrols",function(v) remove_controls = v end) @@ -189,17 +203,17 @@ local function build_list(head) -- todo: store node pointer ... saves loop local size = 0 while current do size = size + 1 - local id = current.id + local id = getid(current) if id == glyph_code then - local chr = current.char + local chr = getchar(current) local dir = directiondata[chr] list[size] = { char = chr, direction = dir, original = dir, level = 0 } - current = current.next + current = getnext(current) elseif id == glue_code then list[size] = { char = 0x0020, direction = "ws", original = "ws", level = 0 } - current = current.next - elseif id == whatsit_code and current.subtype == dir_code then - local dir = current.dir + current = getnext(current) + elseif id == whatsit_code and getsubtype(current) == dir_code then + local dir = getfield(current,"dir") if dir == "+TLT" then list[size] = { char = 0x202A, direction = "lre", original = "lre", level = 0 } elseif dir == "+TRT" then @@ -209,27 +223,27 @@ local function build_list(head) -- todo: store node pointer ... saves loop else list[size] = { char = 0xFFFC, direction = "on", original = "on", level = 0, id = id } -- object replacement character end - current = current.next + current = getnext(current) elseif id == math_code then local skip = 0 - current = current.next - while current.id ~= math_code do + current = getnext(current) + while getid(current) ~= math_code do skip = skip + 1 - current = current.next + current = getnext(current) end - skip = skip + 1 - current = current.next + skip = skip + 1 + current = getnext(current) list[size] = { char = 0xFFFC, direction = "on", original = "on", level = 0, skip = skip, id = id } else local skip = 0 local last = id - current = current.next + current = getnext(current) while n do - local id = current.id - if id ~= glyph_code and id ~= glue_code and not (id == whatsit_code and current.subtype == dir_code) then + local id = getid(current) + if id ~= glyph_code and id ~= glue_code and not (id == whatsit_code and getsubtype(current) == dir_code) then skip = skip + 1 last = id - current = current.next + current = getnext(current) else break end @@ -289,8 +303,8 @@ local function find_run_limit_b_s_ws_on(list,start,limit) end local function get_baselevel(head,list,size) -- todo: skip if first is object (or pass head and test for local_par) - if head.id == whatsit_code and head.subtype == localpar_code then - if head.dir == "TRT" then + if getid(head) == whatsit_code and getsubtype(head) == localpar_code then + if getfield(head,"dir") == "TRT" then return 1, "TRT", true else return 0, "TLT", true @@ -677,58 +691,66 @@ local function apply_to_list(list,size,head,pardir) report_directions("fatal error, size mismatch") break end - local id = current.id + local id = getid(current) local entry = list[index] local begindir = entry.begindir local enddir = entry.enddir if id == glyph_code then local mirror = entry.mirror if mirror then - current.char = mirror + setfield(current,"char",mirror) end if trace_directions then local direction = entry.direction setcolor(current,direction,direction ~= entry.original,mirror) end elseif id == hlist_code or id == vlist_code then - current.dir = pardir -- is this really needed? + setfield(current,"dir",pardir) -- is this really needed? elseif id == glue_code then - if enddir and current.subtype == parfillskip_code then + if enddir and getsubtype(current) == parfillskip_code then -- insert the last enddir before \parfillskip glue - head = insert_node_before(head,current,new_textdir(enddir)) + local d = new_textdir(enddir) + -- setfield(d,"attr",getfield(current,"attr")) + head = insert_node_before(head,current,d) enddir = false done = true end elseif id == whatsit_code then - if begindir and current.subtype == localpar_code then + if begindir and getsubtype(current) == localpar_code then -- local_par should always be the 1st node - head, current = insert_node_after(head,current,new_textdir(begindir)) + local d = new_textdir(begindir) + -- setfield(d,"attr",getfield(current,"attr")) + head, current = insert_node_after(head,current,d) begindir = nil done = true end end if begindir then - head = insert_node_before(head,current,new_textdir(begindir)) + local d = new_textdir(begindir) + -- setfield(d,"attr",getfield(current,"attr")) + head = insert_node_before(head,current,d) done = true end local skip = entry.skip if skip and skip > 0 then for i=1,skip do - current = current.next + current = getnext(current) end end if enddir then - head, current = insert_node_after(head,current,new_textdir(enddir)) + local d = new_textdir(enddir) + -- setfield(d,"attr",getfield(current,"attr")) + head, current = insert_node_after(head,current,d) done = true end if not entry.remove then - current = current.next + current = getnext(current) elseif remove_controls then -- X9 head, current = remove_node(head,current,true) done = true else - current = current.next + current = getnext(current) end index = index + 1 end @@ -736,6 +758,7 @@ local function apply_to_list(list,size,head,pardir) end local function process(head) + head = tonut(head) local list, size = build_list(head) local baselevel, pardir, dirfound = get_baselevel(head,list,size) -- we always have an inline dir node in context if not dirfound and trace_details then @@ -752,7 +775,7 @@ local function process(head) report_directions("result : %s",show_done(list,size)) end head, done = apply_to_list(list,size,head,pardir) - return head, done + return tonode(head), done end directions.installhandler(interfaces.variables.one,process) |